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Infineon Technologies CY7C1021CV33-12ZXCT
- Part No.:
- CY7C1021CV33-12ZXCT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
CY7C1021CV33-12ZXCT.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:1,741
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Product details
Overview
CY7C1021CV33-12ZXCT from Cypress Semiconductor is a 1-Mbit (64K × 16) high-speed CMOS static RAM with 12 ns access time at industrial temperature (–40°C to +85°C), 3.3 V supply, and automatic CE-controlled power-down mode. It supports independent byte write via BHE/BLE pins and delivers 325 mW max active power. Used in real-time data buffering for industrial PLCs, automotive engine control units, and legacy telecom interface cards.
For engineers reviewing the CY7C1021CV33-12ZXCT datasheet, CY7C1021CV33-12ZXCT pinout, CY7C1021CV33-12ZXCT application, or CY7C1021CV33-12ZXCT equivalent, key selection criteria include tAA = 12 ns timing compliance, SOJ/TSOP II package compatibility, byte-selectable I/O architecture, and automotive-E grade thermal capability up to +125°C.
Technical Context
The device implements a fully decoded 64K × 16 asynchronous SRAM array with dual-byte write enable logic: BLE controls IO1–IO8 (lower byte), BHE controls IO9–IO16 (upper byte). Address latching is edge-independent; all address inputs (A0–A15) are sampled on CE assertion.
Power management relies on CE-driven automatic transition between active (ICC ≤ 90 mA) and standby (ISB2 = 5 mA) states. Output drivers support TTL-compatible VOH ≥ 2.4 V and VOL ≤ 0.4 V under specified load conditions, with tri-state timing tHZOE = 6 ns and tLZCE = 3 ns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 64K × 16-bit (1,048,576 bits); enables 16-bit parallel data path without external multiplexing. |
| Access Time (tAA) | 12 ns maximum at –40°C to +85°C; meets real-time control loop timing for 83 MHz bus interfaces. |
| Supply Voltage | 3.3 V ±10%; compatible with standard LVCMOS I/O domains and eliminates level-shifting in 3.3 V systems. |
| Active Current (ICC) | 90 mA max at industrial temp; enables low-power operation in fanless embedded controllers. |
| Standby Current (ISB2) | 5 mA max with CMOS inputs; reduces quiescent power by >94% vs active mode during idle cycles. |
| I/O Voltage Levels | VIH = 2.0 V min, VIL = 0.8 V max; ensures noise margin >0.4 V in noisy industrial environments. |
| Package Type | 44-pin 400-mil SOJ (Z suffix); surface-mount compatible with wave-solder and reflow processes. |
Pinout & Package
Package: 44-pin 400-mil Small Outline J-Lead (SOJ), RoHS-compliant, lead-free plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Input | 16-bit unidirectional address bus; selects one of 65,536 memory locations synchronously with CE. |
| IO1–IO8 | Bidirectional Data (Lower Byte) | Driven by BLE; used for 8-bit sub-word writes/reads without affecting upper byte contents. |
| IO9–IO16 | Bidirectional Data (Upper Byte) | Driven by BHE; enables independent 8-bit updates to high-order word segment. |
| CE | Chip Enable (Active LOW) | Primary device select; triggers automatic power-down when HIGH and disables all outputs. |
| WE | Write Enable (Active LOW) | Controls write cycle initiation; must be LOW with CE LOW and valid BHE/BLE to store data. |
| OE | Output Enable (Active LOW) | Enables output drivers only during read; forces IO pins to high-Z when HIGH or during write. |
| BLE / BHE | Byte Write Enable (Active LOW) | Independent gating of lower/upper data bytes; allows mixed-endian or partial-word updates. |
| VCC / VSS | Power / Ground | Dual VCC (pins 11, 33) and dual VSS (pins 12, 34) reduce IR drop and improve signal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic CE Power-Down | Reduces ICC from 90 mA to 5 mA instantly upon CE deassertion-no external control logic required. |
| Independent Byte Write Control | Enables atomic 8-bit updates to either half of 16-bit word, critical for register-mapped peripheral buffers. |
| Industrial Temperature Range | Guaranteed operation from –40°C to +85°C; validated across full voltage and timing margins per JEDEC JESD22-A108. |
| Low-Impedance Output Drivers | tDOE = 6 ns and tHZOE = 6 ns ensure fast data capture in synchronous bus designs with tight setup windows. |
| Pb-Free Packaging | Meets RoHS Directive 2011/65/EU; 44-pin SOJ (Z suffix) uses matte tin lead finish with no exemption claims. |
Applications
| Industrial PLC Data Buffer | Automotive Engine Control Unit |
|---|---|
|
Use Scenario: Storing real-time sensor fusion results and actuator command history in programmable logic controllers with deterministic scan cycles. IC Role / Device Role / Timing Role: Asynchronous 16-bit scratchpad memory accessed during 10 ms I/O update windows; tAA = 12 ns ensures completion before next cycle trigger. Use Value: Eliminates need for external address latches or glue logic due to CE-synchronized access and byte-select capability. |
Use Scenario: Holding calibrated fuel injection timing tables and misfire detection logs in ECU modules operating under hood temperatures up to +85°C. IC Role / Device Role / Timing Role: Nonvolatile shadow RAM for fast lookup of 16-bit engine maps; ISB2 = 5 mA minimizes battery drain during ignition-off periods. Use Value: Dual VCC/VSS pins suppress ground bounce during simultaneous byte writes, improving ADC sampling accuracy. |
| Legacy Telecom Line Card | Medical Imaging Frame Buffer |
|
Use Scenario: Buffering T1/E1 framing overhead bytes and channel-associated signaling in carrier-grade line interface units. IC Role / Device Role / Timing Role: Parallel 16-bit FIFO staging area synchronized to 2.048 MHz frame clock; tRC = 12 ns supports full-rate packet assembly. Use Value: Pin compatibility with CY7C1021BV33 allows drop-in replacement in field-upgraded equipment without PCB redesign. |
Use Scenario: Temporary storage of 16-bit grayscale pixel rows during real-time ultrasound beamforming processing. IC Role / Device Role / Timing Role: Low-latency memory for pipeline stages requiring sub-20 ns read/write turnaround; tPD = 12 ns enables rapid context switching. Use Value: Independent BLE/BHE control permits interleaved storage of I/Q data channels without read-modify-write overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV102416-12MLI | 12 ns tAA, same 64K × 16 organization, but uses single VCC pin and lacks automatic CE power-down. | Higher ICC (100 mA) and no byte-enable isolation; unsuitable for battery-backed or thermally constrained designs. | Select only if board layout requires single-power-pin footprint and standby current is not critical. |
| AS6C1008-12ZIN | 12 ns tAA, 3.3 V, but rated only for commercial temp (0°C to +70°C); no automotive or industrial qualification. | Not qualified for under-hood or factory-floor deployment; fails thermal validation beyond +70°C ambient. | Acceptable only for indoor, climate-controlled instrumentation where extended temperature range is unnecessary. |
Compared with IS61LV102416-12MLI and AS6C1008-12ZIN, CY7C1021CV33-12ZXCT uniquely combines industrial temperature rating, automatic CE power-down, and true independent byte write-enabling robust, low-power operation in harsh environments without design compromises.
Availability
CY7C1021CV33-12ZXCT is available at Aetrix Electronics and suitable for industrial PLCs, automotive ECUs, and legacy telecom line cards requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for CY7C1021CV33-12ZXCT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Cypress Semiconductor (now part of Infineon Technologies) designs high-reliability memory and microcontroller solutions for industrial, automotive, and communications infrastructure markets.
The CY7C1021CV33 belongs to Cypress's legacy high-speed SRAM product line, engineered specifically for deterministic, low-latency data buffering in mission-critical embedded systems with stringent thermal and power constraints.
FAQ
What is the maximum junction temperature for CY7C1021CV33-12ZXCT in continuous operation?
The device is rated for ambient operation up to +85°C in industrial grade, with ΘJA = 65.06°C/W in SOJ package. Using worst-case VCC = 3.63 V and ICC = 90 mA, calculated TJ = 85°C + (0.327 W × 65.06°C/W) ≈ 106°C - within the absolute maximum rating of +125°C.
Can CY7C1021CV33-12ZXCT operate with 2.5 V supply?
No. The device is specified only for 3.3 V ±10% (2.97 V to 3.63 V). At 2.5 V, VIH minimum falls below required 2.0 V, and tAA timing violations occur due to insufficient drive strength; operation is not guaranteed and may cause data corruption.
Is the 44-pin SOJ package lead-free and RoHS compliant?
Yes. The "Z" suffix in CY7C1021CV33-12ZXCT denotes lead-free, RoHS-compliant construction with matte tin plating. Cypress document #38-05132 Rev. *I explicitly confirms Pb-free qualification per JEDEC JS709A and EU Directive 2011/65/EU.
How does automatic power-down behave when CE is toggled faster than tPD?
tPD = 12 ns is the minimum CE HIGH-to-power-down delay. If CE pulses shorter than 12 ns occur, the internal power-down circuitry does not activate; the device remains in active state, drawing full ICC. Stable CE HIGH ≥12 ns is required to enter ISB2 mode.
CY7C1021CV33-12ZXCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 44-TSOP (0.400", 10.16mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 1Mbit
- Memory Organization:
- 64K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 12ns
- Access Time:
- 12 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
CY7C1021CV33-12ZXCT FAQ
1.How can I place an order for CY7C1021CV33-12ZXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1021CV33-12ZXCT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CY7C1021CV33-12ZXCT reliable?
The price and inventory of CY7C1021CV33-12ZXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1021CV33-12ZXCT is usually 5 days.
3.What payment methods are accepted for CY7C1021CV33-12ZXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1021CV33-12ZXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1021CV33-12ZXCT?
CY7C1021CV33-12ZXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1021CV33-12ZXCT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CY7C1021CV33-12ZXCT?
For technical support, including CY7C1021CV33-12ZXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1021CV33-12ZXCT requirements.
6.How does Aetrix verify that CY7C1021CV33-12ZXCT is sourced from the original manufacturer or authorized distributors?
All CY7C1021CV33-12ZXCT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY7C1021CV33-12ZXCT meets industry standards.
7.What is the process for return or replacement of CY7C1021CV33-12ZXCT?
All CY7C1021CV33-12ZXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1021CV33-12ZXCT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CY7C1021CV33-12ZXCT part is unused and in its original packaging.
Return procedure for CY7C1021CV33-12ZXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY7C1021CV33-12ZXCT Tags
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